CVE-2021-3043

Name: CVE-2021-3043
Creator: NVD / NIST
Published: 2021-07-15T17:15:08.793+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.8/10EPSS 0.63%

Last modified Jun 17, 2026

CVE-2021-3043 is a medium-severity vulnerability rated 4.8/10 on the CVSS scale. A reflected cross-site scripting (XSS) vulnerability exists in the Prisma Cloud Compute web console that enables a remote attacker to execute arbitrary JavaScript code in the browser-based web console while an authenticated administrator is using that web interface. Prisma Cloud Compute SaaS versions were automatically upgraded to the fixed release. EPSS estimates a 0.63% chance of exploitation in the next 30 days.

Description

A reflected cross-site scripting (XSS) vulnerability exists in the Prisma Cloud Compute web console that enables a remote attacker to execute arbitrary JavaScript code in the browser-based web console while an authenticated administrator is using that web interface. Prisma Cloud Compute SaaS versions were automatically upgraded to the fixed release. No additional action is required for these instances. This issue impacts: Prisma Cloud Compute 20.12 versions earlier than Prisma Cloud Compute 20.12.552; Prisma Cloud Compute 21.04 versions earlier than Prisma Cloud Compute 21.04.439.

Metrics

CVSS 3.1

4.8/10

CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

EPSS Probability

0.63%

45.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Paloaltonetworks	Prisma Cloud	>= 20.12, < 20.12.552
Paloaltonetworks	Prisma Cloud	>= 21.04, < 21.04.439

References

https://security.paloaltonetworks.com/CVE-2021-3043Vendor Advisory
https://security.paloaltonetworks.com/CVE-2021-3043Vendor Advisory

Timeline

Published: Jul 15, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-3043?

How severe is CVE-2021-3043?

CVE-2021-3043 has a CVSS score of 4.8/10 (MEDIUM severity). The EPSS model estimates a 0.63% probability of exploitation in the next 30 days.

How do I fix CVE-2021-3043?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-3043?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST